Structure of the K-T mammal radiation in North America: speculations on turnover rates and trophic structure

• Autorzy: Archibald J.D.
• Języki publikacji: EN

Abstrakty

EN

Preliminary results from Montana and New Mexico (USA) indicate that appearance rates for mammal species increase from the latest Cretaceous (Lancian) into the early Paleocene (Puercan) with a slight decline into the middle Paleocene (Torrejonian). Disappearance rates decline over the same interval and equal appearance rates by the Torrejonian. These results are the opposite of those found by Van Valen (1978). Some groups (condylarthrans) have more frequent speciation events and . shorter species durations than suggested by Stanley (1979). The overall appearance rate for the K-T interval is very similar to that for the Paleocene-Eoeene transition (both about 1 sp./10⁴ yrs.). The overall disappearance rate for the K-T interval (1.4 sp./10⁴ yrs.) is markedly higher than for the Paleocene—Eocene transition (0.5 sp./10⁴ yrs.). With the extinction of dinosaurs, “guilds” of small mammals are re-established and new “guilds” form after about 2.5X10⁵ years. Appearance rates are highest during guild establishment.

• Wydawca: -
• Czasopismo: Acta Palaeontologica Polonica
• Rocznik: 1983
• Tom: 28
• Numer: 1-2
• Opis fizyczny: p.7-17,fig.,ref.

Twórcy

autor

Archibald J.D.

• Department of Biology and Peabody Museum of Natural History, Yale University , New Haven, Connecticut 06520, USA

Bibliografia

• ARCHIBALD, J. D. 1982. A study of Mammalia and geology across the Cretaceous-Tertiary boundary in Garfield County, Montana. — Univ. Calif. Pubs. Geol. Sci., 122, 1—286.
• ARCHIBALD, J. D., BUTLER, R. F., LINDSAY, E. H., CLEMENS, W. A., and DINGUS, L. 1982. Upper Cretaceous-Paleocene biostratigraphy and magnetostratigraphy, Hell Creek and Tullock formations, northeastern Montana. — Geology, 10, 153—159.
• ARCHIBALD, J. D., RIGBY, J. K. Jr., and ROBISON, S. 1983. Revision of Oxyacodon (Condylarthra, Periptychidae) and its included species, and a description of O. ferronensis n. sp. — J. Paleont., 57, 53—72.
• CARR, T. R. and KITCHELL, J. A. 1980. Dynamics of taxonomic diversity. — Paleobiology, 6, 427—443.
• CLEMENS, W. A. 1974. Purgatorius, an early paromomyid primate (Mammalia).— Science, 184, 903—905.
• LaBRECQUE, J. L., KENT, D. V. and CANDE, S. C. 1977 Revised magnetic polarity time scale for Late Cretaceous and Cenozoic time. — Geology, 5, 330—335.
• LILLEGRAVEN, J. A. 1972. Ordinal and familial diversity of Cenozoic mammals. — Taxon, 21, 261—274.
• LINDSAY, E. H., BUTLER, R. F. and JOHNSON, N. M. 1981. Magnetic polarity zonation and biostratigraphy of Late Cretaceous and Paleocene continental deposits, San Juan Basin, New Mexico. — Amer. J. Sci., 281, 390—435.
• MATTHEW, W. D. 1937. Paleocene faunas of the San Juan Basin, New Mexico. — Trans. Amer. Phil. Soc., 30, 1—510.
• ROSE, K. D. 1981. The Clarkforkian land-mammal age and mammalian faunal composition across the Paleocene-Eocene boundary. — Univ. Mich. Papers Paleont., 26, 1—197.
• RUSSELL, D. E. 1967. Le Paléocène continental d’Amérique du Nord. — Mém. Mus. Natn. Hist. Nat. 16, 39—99.
• SLOAN, R. E. 1981. Systematics of Paleocene multituberculates from the San Juan Basin, New Mexico. In: S. Lucas, K. Rigby, Jr. and В. Kues (eds.), Advances in San Juan Basin Paleontology, 127—160. Univ. New Mexico Press, Albuquerque.
• SLOAN, R. E. and Van VALEN, L. 1965. Cretaceous mammals from Montana. — Science, 148, 220—227.
• STANLEY, S. M. 1979. Macroevolution, Pattern and Process. 332 pp. W. H. Freeman and Co., San Francisco.
• TAYLOR, L. H. 1981. The Kutz Canyon local fauna, Torrejonian (middle Paleocene) of the San Juan Basin, New Mexico. In: S. Lucas, K. Rigby Jr., and B. Kues (eds.), Advances in San Juan Basin Paleontology, 242—263. Univ. New Mexico Press, Albuquerque.
• TOMIDA, Y. 1981. “Dragonian” fossils from the San Juan Basin and the status of the “Dragonian” land mammal “age”. In: ibidem, 222—241.
• TSENTAS, C. 1981. Mammalian biostratigraphy of the middle Paleocene (Torrejonian) strata of the San Juan Basin: Notes on Torreon Wash and the status of the Pantolambda and Deltatherium faunal “zones”. In: ibidem, 264—292.
• Van VALEN, L. 1978. The beginning of the age of mammals. — Evol. Theory, 4, 45—80.
• Van VALEN, L. and SLOAN, R. E. 1965. The earliest primates — Science, 150, 743—745.
• Van VALEN, L. and SLOAN, R. E. 1977. Ecology and extinction of the dinosaurs. — Evol. Theory, 2, 37—64.